View Compilation Error

0_0_33536810_12137.cpp: In function 'bool check(ll)':
0_0_33536810_12137.cpp:25:13: error: 'class std::deque<int>' has no member named 'top'
     ll x2=s.top();
             ^
0_0_33536810_12137.cpp:26:7: error: 'class std::deque<int>' has no member named 'pop'
     s.pop();
       ^
0_0_33536810_12137.cpp:27:15: error: 'class std::deque<int>' has no member named 'top'
     ll x1 = s.top();
               ^
0_0_33536810_12137.cpp:28:7: error: 'class std::deque<int>' has no member named 'push'
     s.push(x2);
       ^